Valve



FIG. 1 is a front elevational view of an embodiment of the valve according to the invention;

FIG. 2 is an end view of the upwardly inclined portion of the valve of FIG. 1 as seen in a direction along the longitudinal axis of the upwardly inclined portion;

FIG. 3 is a front elevational view of a another embodiment of the valve according to the invention; and,

FIG. 4 is an end view of the upwardly inclined portion of the valve of FIG. 3 as seen in a direction along the longitudinal axis of the upwardly inclined portion. 

The ornamental design for a valve, as shown and described. 